1375495399 has 4 divisors (see below), whose sum is σ = 1375570336. Its totient is φ = 1375420464.

The previous prime is 1375495397. The next prime is 1375495403. The reversal of 1375495399 is 9935945731.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 1375495399 - 2¹ = 1375495397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1375495393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10747 + ... + 53539.

It is an arithmetic number, because the mean of its divisors is an integer number (343892584).

Almost surely, 2^1375495399 is an apocalyptic number.

1375495399 is a deficient number, since it is larger than the sum of its proper divisors (74937).

1375495399 is an equidigital number, since it uses as much as digits as its factorization.

1375495399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74936.

The product of its digits is 4592700, while the sum is 55.

The square root of 1375495399 is about 37087.6717926591. The cubic root of 1375495399 is about 1112.1235756146.

The spelling of 1375495399 in words is "one billion, three hundred seventy-five million, four hundred ninety-five thousand, three hundred ninety-nine".